| Crocknalaragagh | |
| Other Name: | Cnoc na Láragacha |
| Elevation M: | 471 |
| Listing: | Marilyn |
| Location: | County Donegal, Ireland |
| Map: | island of Ireland |
| Map Relief: | yes |
| Range: | Derryveagh Mountains |
| Grid Ref Ireland: | B984261 |
Crocknalaragagh is a mountain in County Donegal, Ireland, with a height of 471 m.[1]
It is the second-most northern and the lowest of the mountain range locally called the Seven Sisters which also includes Muckish, Aghla Beg, Ardloughnabrackbaddy, Aghla More, Mackoght (also known as 'Little Errigal') and Errigal. All of the Seven Sisters are part of the Derryveagh Mountains.